A Comparison Between The Wear Rate Behavior Of Polyester Reinforced By Glass And Kevlar Fibers


In this research the wear rate of the polyester reinforced by chopped glassfibers and chopped Kevlar fibers with length (1-2.5 mm) and weight fraction (4, 8, 12,16 WT %) has been investigated. A Pin -on- Disc wear testing machine of variablespeed has been used. Flat against flat sliding surfaces under variable workingparameters conditions have been tested.The results of flat sliding surfaces show that the wear rate of the specimensdepends heavily on the working condition. It increases with the increase of the loadand sliding speed, and the wear rate decreases with the increase of the weight fraction.The results also show that the wear rate for polyester reinforced by Kevlarfiber was less than the polyester reinforced by glass fiber. The optimum value of wearrate was (2.75*10-6 mm3/mm) happened at weight fraction (16 WT %) when reinforcedby Kevlar fibers.